/// <summary>
/// Used only in creation of the genesis blocks and in unit tests.
/// </summary>
internal TransactionOutput(NetworkParameters @params, byte[] scriptBytes)
: base(@params)
{
_scriptBytes = scriptBytes;
_value = Utils.ToNanoCoins(50, 0);
_availableForSpending = true;
}
/// <summary>
/// Parses the given private key as created by the "dumpprivkey" BitCoin C++ RPC.
/// </summary>
/// <param name="params">The expected network parameters of the key. If you don't care, provide null.</param>
/// <param name="encoded">The base58 encoded string.</param>
/// <exception cref="BitCoinSharp.AddressFormatException">If the string is invalid or the header byte doesn't match the network params.</exception>
public DumpedPrivateKey(NetworkParameters @params, string encoded)
: base(encoded)
{
if (@params != null && Version != @params.DumpedPrivateKeyHeader)
throw new AddressFormatException("Mismatched version number, trying to cross networks? " + Version +
" vs " + @params.DumpedPrivateKeyHeader);
}
/// <summary>
/// Construct an address from parameters and the standard "human readable" form.
/// </summary>
/// <remarks>
/// Example:<p/>
/// <pre>new Address(NetworkParameters.prodNet(), "17kzeh4N8g49GFvdDzSf8PjaPfyoD1MndL");</pre>
/// </remarks>
/// <exception cref="AddressFormatException"/>
public Address(NetworkParameters @params, string address)
: base(address)
{
if (Version != @params.AddressHeader)
throw new AddressFormatException("Mismatched version number, trying to cross networks? " + Version +
" vs " + @params.AddressHeader);
}
internal Transaction(NetworkParameters @params)
: base(@params)
{
_version = 1;
_inputs = new List<TransactionInput>();
_outputs = new List<TransactionOutput>();
// We don't initialize appearsIn deliberately as it's only useful for transactions stored in the wallet.
}
internal TransactionOutput(NetworkParameters @params, Transaction parent, ulong value, Address to)
: base(@params)
{
_value = value;
_scriptBytes = Script.CreateOutputScript(to);
ParentTransaction = parent;
_availableForSpending = true;
}
/// <summary>
/// Used only in creation of the genesis block.
/// </summary>
internal TransactionInput(NetworkParameters @params, Transaction parentTransaction, byte[] scriptBytes)
: base(@params)
{
ScriptBytes = scriptBytes;
Outpoint = new TransactionOutPoint(@params, -1, null);
_sequence = uint.MaxValue;
ParentTransaction = parentTransaction;
}
/// <summary>
/// Connect to the given IP address using the port specified as part of the network parameters. Once construction
/// is complete a functioning network channel is set up and running.
/// </summary>
/// <param name="peerAddress">IP address to connect to. IPv6 is not currently supported by BitCoin. If port is not positive the default port from params is used.</param>
/// <param name="params">Defines which network to connect to and details of the protocol.</param>
/// <param name="bestHeight">How many blocks are in our best chain</param>
/// <param name="connectTimeout">Timeout in milliseconds when initially connecting to peer</param>
/// <exception cref="IOException">If there is a network related failure.</exception>
/// <exception cref="ProtocolException">If the version negotiation failed.</exception>
public NetworkConnection(PeerAddress peerAddress, NetworkParameters @params, uint bestHeight, int connectTimeout)
{
_params = @params;
_remoteIp = peerAddress.Addr;
var port = (peerAddress.Port > 0) ? peerAddress.Port : @params.Port;
var address = new IPEndPoint(_remoteIp, port);
_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
_socket.Connect(address);
_socket.SendTimeout = _socket.ReceiveTimeout = connectTimeout;
_out = new NetworkStream(_socket, FileAccess.Write);
_in = new NetworkStream(_socket, FileAccess.Read);
// the version message never uses check-summing. Update check-summing property after version is read.
_serializer = new BitcoinSerializer(@params, false);
// Announce ourselves. This has to come first to connect to clients beyond v0.30.20.2 which wait to hear
// from us until they send their version message back.
WriteMessage(new VersionMessage(@params, bestHeight));
// When connecting, the remote peer sends us a version message with various bits of
// useful data in it. We need to know the peer protocol version before we can talk to it.
_versionMessage = (VersionMessage) ReadMessage();
// Now it's our turn ...
// Send an ACK message stating we accept the peers protocol version.
WriteMessage(new VersionAck());
// And get one back ...
ReadMessage();
// Switch to the new protocol version.
var peerVersion = _versionMessage.ClientVersion;
_log.InfoFormat("Connected to peer: version={0}, subVer='{1}', services=0x{2:X}, time={3}, blocks={4}",
peerVersion,
_versionMessage.SubVer,
_versionMessage.LocalServices,
UnixTime.FromUnixTime(_versionMessage.Time),
_versionMessage.BestHeight
);
// BitCoinSharp is a client mode implementation. That means there's not much point in us talking to other client
// mode nodes because we can't download the data from them we need to find/verify transactions.
if (!_versionMessage.HasBlockChain())
{
// Shut down the socket
try
{
Shutdown();
}
catch (IOException)
{
// ignore exceptions while aborting
}
throw new ProtocolException("Peer does not have a copy of the block chain.");
}
// newer clients use check-summing
_serializer.UseChecksumming(peerVersion >= 209);
// Handshake is done!
}
/// <summary>
/// Creates an UNSIGNED input that links to the given output
/// </summary>
internal TransactionInput(NetworkParameters @params, Transaction parentTransaction, TransactionOutput output)
: base(@params)
{
var outputIndex = output.Index;
Outpoint = new TransactionOutPoint(@params, outputIndex, output.ParentTransaction);
ScriptBytes = EmptyArray;
_sequence = uint.MaxValue;
ParentTransaction = parentTransaction;
}
public MemoryBlockStore(NetworkParameters @params)
{
_blockMap = new Dictionary<ByteBuffer, byte[]>();
// Insert the genesis block.
var genesisHeader = @params.GenesisBlock.CloneAsHeader();
var storedGenesis = new StoredBlock(genesisHeader, genesisHeader.GetWork(), 0);
Put(storedGenesis);
SetChainHead(storedGenesis);
}
/// <summary>
/// Creates a new, empty wallet with no keys and no transactions. If you want to restore a wallet from disk instead,
/// see loadFromFile.
/// </summary>
public Wallet(NetworkParameters @params)
{
_params = @params;
Keychain = new List<EcKey>();
Unspent = new Dictionary<Sha256Hash, Transaction>();
Spent = new Dictionary<Sha256Hash, Transaction>();
_inactive = new Dictionary<Sha256Hash, Transaction>();
Pending = new Dictionary<Sha256Hash, Transaction>();
_dead = new Dictionary<Sha256Hash, Transaction>();
}
public VersionMessage(NetworkParameters @params, uint newBestHeight)
: base(@params)
{
ClientVersion = NetworkParameters.ProtocolVersion;
LocalServices = 0;
Time = UnixTime.ToUnixTime(DateTime.UtcNow);
// Note that the official client doesn't do anything with these, and finding out your own external IP address
// is kind of tricky anyway, so we just put nonsense here for now.
MyAddr = new PeerAddress(IPAddress.Loopback, @params.Port, 0);
TheirAddr = new PeerAddress(IPAddress.Loopback, @params.Port, 0);
SubVer = "BitCoinSharp 0.1";
BestHeight = newBestHeight;
}
/// <exception cref="BitCoinSharp.BlockStoreException" />
public BoundedOverheadBlockStore(NetworkParameters @params, FileInfo file)
{
_params = @params;
_notFoundMarker = new StoredBlock(null, null, uint.MaxValue);
try
{
Load(file);
}
catch (IOException e)
{
_log.Error("failed to load block store from file", e);
CreateNewStore(@params, file);
}
}
internal TransactionOutPoint(NetworkParameters @params, int index, Transaction fromTx)
: base(@params)
{
Index = index;
if (fromTx != null)
{
Hash = fromTx.Hash;
FromTx = fromTx;
}
else
{
// This happens when constructing the genesis block.
Hash = Sha256Hash.ZeroHash;
}
}
/// <exception cref="BitCoinSharp.BlockStoreException" />
public DiskBlockStore(NetworkParameters @params, FileInfo file)
{
_params = @params;
_blockMap = new Dictionary<Sha256Hash, StoredBlock>();
try
{
Load(file);
if (_stream != null)
{
_stream.Dispose();
}
_stream = file.Open(FileMode.Append, FileAccess.Write); // Do append.
}
catch (IOException e)
{
_log.Error("failed to load block store from file", e);
CreateNewStore(@params, file);
}
}
/// <exception cref="ProtocolException"/>
internal Message(NetworkParameters @params, byte[] msg, int offset, uint protocolVersion = NetworkParameters.ProtocolVersion)
{
ProtocolVersion = protocolVersion;
Params = @params;
Bytes = msg;
Cursor = Offset = offset;
Parse();
#if SELF_CHECK
// Useful to ensure serialize/deserialize are consistent with each other.
if (GetType() != typeof (VersionMessage))
{
var msgbytes = new byte[Cursor - offset];
Array.Copy(msg, offset, msgbytes, 0, Cursor - offset);
var reserialized = BitcoinSerialize();
if (!reserialized.SequenceEqual(msgbytes))
throw new Exception("Serialization is wrong: " + Environment.NewLine +
Utils.BytesToHexString(reserialized) + " vs " + Environment.NewLine +
Utils.BytesToHexString(msgbytes));
}
#endif
Bytes = null;
}
/// <exception cref="BitCoinSharp.ProtocolException" />
public VersionMessage(NetworkParameters @params, byte[] msg)
: base(@params, msg, 0)
{
}
public GetDataMessage(NetworkParameters @params)
: base(@params)
{
}
public SeedPeers(NetworkParameters @params)
{
_params = @params;
}
/// <summary>
/// Allows the output of a private key in versioned, checksummed form.
/// </summary>
/// <param name="params">The network parameters of this key, needed for the version byte. </param>
/// <param name="keyBytes">The 256-bit private key.</param>
public DumpedPrivateKey(NetworkParameters @params, byte[] keyBytes)
: base(@params.DumpedPrivateKeyHeader, keyBytes)
{
if (keyBytes.Length != 32) // 256 bit keys
throw new ArgumentException("Keys are 256 bits, so you must provide 32 bytes.", "keyBytes");
}
/// <summary>
/// Sets up the given NetworkParameters with testnet values.
/// </summary>
private static NetworkParameters CreateTestNet(NetworkParameters n)
{
// Genesis hash is 0000000224b1593e3ff16a0e3b61285bbc393a39f78c8aa48c456142671f7110
// The proof of work limit has to start with 00, as otherwise the value will be interpreted as negative.
n.ProofOfWorkLimit = new BigInteger("0000000fffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16);
n.PacketMagic = 0xfabfb5da;
n.Port = 18333;
n.AddressHeader = 111;
n.DumpedPrivateKeyHeader = 239;
n.Interval = _interval;
n.TargetTimespan = _targetTimespan;
n.GenesisBlock = CreateGenesis(n);
n.GenesisBlock.Time = 1296688602;
n.GenesisBlock.DifficultyTarget = 0x1d07fff8;
n.GenesisBlock.Nonce = 384568319;
var genesisHash = n.GenesisBlock.HashAsString;
Debug.Assert(genesisHash.Equals("00000007199508e34a9ff81e6ec0c477a4cccff2a4767a8eee39c11db367b008"));
return n;
}
/// <exception cref="ProtocolException"/>
internal AddressMessage(NetworkParameters networkParams, byte[] payload)
: base(networkParams, payload, 0)
{
}
internal Message(NetworkParameters @params)
{
Params = @params;
}
/// <summary>
/// Exports the private key in the form used by the Satoshi client "dumpprivkey" and "importprivkey" commands. Use
/// the <see cref="DumpedPrivateKey.ToString"/> method to get the string.
/// </summary>
/// <param name="params">The network this key is intended for use on.</param>
/// <returns>Private key bytes as a <see cref="DumpedPrivateKey"/>.</returns>
public DumpedPrivateKey GetPrivateKeyEncoded(NetworkParameters @params)
{
return(new DumpedPrivateKey(@params, GetPrivKeyBytes()));
}
internal Message(NetworkParameters @params)
{
Params = @params;
}
/// <exception cref="ProtocolException"/>
public VersionMessage(NetworkParameters networkParams, byte[] msg)
: base(networkParams, msg, 0)
{
}
/// <summary>
/// Constructs a BitcoinSerializer with the given behavior.
/// </summary>
/// <param name="params">MetworkParams used to create Messages instances and determining packetMagic</param>
/// <param name="usesChecksumming">Set to true if checksums should be included and expected in headers</param>
public BitcoinSerializer(NetworkParameters @params, bool usesChecksumming)
{
_params = @params;
_usesChecksumming = usesChecksumming;
}
/// <summary>
/// Deserializes an input message. This is usually part of a transaction message.
/// </summary>
/// <exception cref="BitCoinSharp.ProtocolException" />
public TransactionInput(NetworkParameters @params, Transaction parentTransaction, byte[] payload, int offset)
: base(@params, payload, offset)
{
ParentTransaction = parentTransaction;
}
/// <summary>
/// The test chain created by Gavin.
/// </summary>
public static NetworkParameters TestNet()
{
var n = new NetworkParameters();
return(CreateTestNet(n));
}
public ListMessage(NetworkParameters @params)
: base(@params)
{
_items = new List<InventoryItem>();
}
/// <summary>
/// The primary BitCoin chain created by Satoshi.
/// </summary>
public static NetworkParameters ProdNet()
{
var n = new NetworkParameters();
n.ProofOfWorkLimit = new BigInteger("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16);
n.Port = 8333;
n.PacketMagic = 0xf9beb4d9;
n.AddressHeader = 0;
n.DumpedPrivateKeyHeader = 128;
n.Interval = _interval;
n.TargetTimespan = _targetTimespan;
n.GenesisBlock = CreateGenesis(n);
n.GenesisBlock.DifficultyTarget = 0x1d00ffff;
n.GenesisBlock.Time = 1231006505;
n.GenesisBlock.Nonce = 2083236893;
var genesisHash = n.GenesisBlock.HashAsString;
Debug.Assert(genesisHash.Equals("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"), genesisHash);
return n;
}
/// <summary>
/// Returns a testnet params modified to allow any difficulty target.
/// </summary>
internal static NetworkParameters UnitTests()
{
var n = new NetworkParameters();
n = CreateTestNet(n);
n.ProofOfWorkLimit = new BigInteger("00ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", 16);
n.GenesisBlock.DifficultyTarget = Block.EasiestDifficultyTarget;
n.Interval = 10;
n.TargetTimespan = 200000000; // 6 years. Just a very big number.
return n;
}
/// <exception cref="ProtocolException"/>
internal AddressMessage(NetworkParameters networkParams, byte[] payload, int offset)
: base(networkParams, payload, offset)
{
}
/// <summary>
/// The test chain created by Gavin.
/// </summary>
public static NetworkParameters TestNet()
{
var n = new NetworkParameters();
return CreateTestNet(n);
}
/// <summary>
/// Construct a Script using the given network parameters and a range of the programBytes array.
/// </summary>
/// <param name="params">Network parameters.</param>
/// <param name="programBytes">Array of program bytes from a transaction.</param>
/// <param name="offset">How many bytes into programBytes to start reading from.</param>
/// <param name="length">How many bytes to read.</param>
/// <exception cref="ScriptException"/>
public Script(NetworkParameters @params, byte[] programBytes, int offset, int length)
{
_params = @params;
Parse(programBytes, offset, length);
}
private static Block CreateGenesis(NetworkParameters n)
{
var genesisBlock = new Block(n);
var t = new Transaction(n);
try
{
// A script containing the difficulty bits and the following message:
//
// "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"
var bytes = Hex.Decode("04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73");
t.AddInput(new TransactionInput(n, t, bytes));
using (var scriptPubKeyBytes = new MemoryStream())
{
Script.WriteBytes(scriptPubKeyBytes, Hex.Decode("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"));
scriptPubKeyBytes.Write(Script.OpCheckSig);
t.AddOutput(new TransactionOutput(n, scriptPubKeyBytes.ToArray()));
}
}
catch (Exception)
{
}
genesisBlock.AddTransaction(t);
return genesisBlock;
}
/// <summary>
/// Returns the address that corresponds to the public part of this ECKey. Note that an address is derived from
/// the RIPEMD-160 hash of the public key and is not the public key itself (which is too large to be convenient).
/// </summary>
public Address ToAddress(NetworkParameters @params)
{
var hash160 = Utils.Sha256Hash160(_pub);
return(new Address(@params, hash160));
}
private byte[] _programCopy; // TODO: remove this
#endregion Fields
#region Constructors
/// <summary>
/// Construct a Script using the given network parameters and a range of the programBytes array.
/// </summary>
/// <param name="params">Network parameters.</param>
/// <param name="programBytes">Array of program bytes from a transaction.</param>
/// <param name="offset">How many bytes into programBytes to start reading from.</param>
/// <param name="length">How many bytes to read.</param>
/// <exception cref="ScriptException"/>
public Script(NetworkParameters @params, byte[] programBytes, int offset, int length)
{
_params = @params;
Parse(programBytes, offset, length);
}
/// <summary>
/// Construct a peer address from a serialized payload.
/// </summary>
/// <exception cref="ProtocolException"/>
public PeerAddress(NetworkParameters networkParams, byte[] payload, int offset, uint protocolVersion)
: base(networkParams, payload, offset, protocolVersion)
{
}
internal Message(NetworkParameters networkParams)
{
Params = networkParams;
}
/// <summary>
/// Constructs a BlockChain connected to the given list of wallets and a store.
/// </summary>
/// <exception cref="BlockStoreException"/>
public BlockChain(NetworkParameters @params, IEnumerable<Wallet> wallets, IBlockStore blockStore)
{
_blockStore = blockStore;
_chainHead = blockStore.GetChainHead();
_log.InfoFormat("chain head is:{0}{1}", Environment.NewLine, _chainHead.Header);
_params = @params;
_wallets = new List<Wallet>(wallets);
}
/// <summary>
/// Deserializes an input message. This is usually part of a transaction message.
/// </summary>
/// <exception cref="BitCoinSharp.ProtocolException" />
public TransactionInput(NetworkParameters @params, Transaction parentTransaction, byte[] payload, int offset)
: base(@params, payload, offset)
{
ParentTransaction = parentTransaction;
}
/// <summary>
/// Constructs a BlockChain connected to the given wallet and store. To obtain a <see cref="Wallet"/> you can construct
/// one from scratch, or you can deserialize a saved wallet from disk using <see cref="Wallet.LoadFromFile"/>.
/// </summary>
/// <remarks>
/// For the store you can use a <see cref="MemoryBlockStore"/> if you don't care about saving the downloaded data, or a
/// <see cref="BoundedOverheadBlockStore"/> if you'd like to ensure fast start-up the next time you run the program.
/// </remarks>
/// <exception cref="BlockStoreException"/>
public BlockChain(NetworkParameters @params, Wallet wallet, IBlockStore blockStore)
: this(@params, new List<Wallet>(), blockStore)
{
if (wallet != null)
AddWallet(wallet);
}
/// <exception cref="BitCoinSharp.ProtocolException" />
public GetDataMessage(NetworkParameters @params, byte[] payloadBytes)
: base(@params, payloadBytes)
{
}
/// <exception cref="BitCoinSharp.ProtocolException" />
public ListMessage(NetworkParameters @params, byte[] bytes)
: base(@params, bytes, 0)
{
}
/// <exception cref="ProtocolException"/>
public UnknownMessage(NetworkParameters @params, string name, byte[] payloadBytes)
: base(@params, payloadBytes, 0)
{
_name = name;
}
/// <exception cref="IOException"/>
/// <exception cref="ProtocolException"/>
public NetworkConnection(IPAddress inetAddress, NetworkParameters networkParams, uint bestHeight, int connectTimeout)
: this(new PeerAddress(inetAddress), networkParams, bestHeight, connectTimeout)
{
}